diff options
Diffstat (limited to 'drivers/iio/temperature/maxim_thermocouple.c')
| -rw-r--r-- | drivers/iio/temperature/maxim_thermocouple.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/drivers/iio/temperature/maxim_thermocouple.c b/drivers/iio/temperature/maxim_thermocouple.c index 39dd2026ccc9..f962f31a5eb2 100644 --- a/drivers/iio/temperature/maxim_thermocouple.c +++ b/drivers/iio/temperature/maxim_thermocouple.c @@ -123,22 +123,26 @@ static int maxim_thermocouple_read(struct maxim_thermocouple_data *data, { unsigned int storage_bytes = data->chip->read_size; unsigned int shift = chan->scan_type.shift + (chan->address * 8); - unsigned int buf; + __be16 buf16; + __be32 buf32; int ret; - ret = spi_read(data->spi, (void *) &buf, storage_bytes); - if (ret) - return ret; - switch (storage_bytes) { case 2: - *val = be16_to_cpu(buf); + ret = spi_read(data->spi, (void *)&buf16, storage_bytes); + *val = be16_to_cpu(buf16); break; case 4: - *val = be32_to_cpu(buf); + ret = spi_read(data->spi, (void *)&buf32, storage_bytes); + *val = be32_to_cpu(buf32); break; + default: + ret = -EINVAL; } + if (ret) + return ret; + /* check to be sure this is a valid reading */ if (*val & data->chip->status_bit) return -EINVAL; |